#include <Eigen/Dense>
#include <iostream>

using namespace std;
int
main()
{
	Eigen::MatrixXf mat(2, 4);
	mat << 1, 2, 6, 9, 3, 1, 7, 2;

	std::cout << "Column's maximum: " << std::endl << mat.colwise().maxCoeff() << std::endl;
}
